[sysopt]

check your ignition coils, if those check out ok, could be fuel delivery problem like an old fuel filter or partly clogged injector(s). Probably a good idea to read your spark plugs... if theyre white youre running lean (fuel starvation) and is probably related to the fuel delivery problem I mentioned before. If some are wet, very possibly an ignition problem. If all of them are wet, then its probably sensor failure.